Chimney cowl



May s, 1923. y

"N. T. MGCULLOUGH CHIMNEY COWL Filed Nov. 5, 1920 W T Mc CuZZough Patented ay l8, i923.

WILLIAM T. MGCULLOUGH, 0F SALEM, MISSOURI.

CHIMNEY COWL.

Application filed November 5, 1920. Serial No. 421,977.

To all whom it may/concern.'

Be it known that I, WILLIAM T. MCCUL- LOUGH, a citizen of the United States, re siding at Salem, in the county of Dent and State of Missouri, have invented certain new and useful Improvements in a Chimney Cowl; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the Yart to which it 'appertains to make and use the same.

This invention relates to new and useful improvements in chimney cowls adapted to prevent downward pressure of wind and atmosphere in the iue of a chimney and has for its primary object the provision of a rotatable elbowshaped or angular element that is automatically positioned by the wind to prevent the wind from blowing down the chimney and therebyy providing free draft to said chimney at all times.

Another object of this invention is the provision of a chimney( cowl of the above stated character which will be simple, durable and eiiicient, and which may be manu# facturedA and sold at a comparatively. low cost.

With these and other objects in view, as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully "described and claimed. v

For a complete 'understanding of my invention, reference is to be had to the following descri tion and accompanying drawin ,in whic igure 1 is a side elevation, illustrating a chimney cowl constructed in accordance with my invention.

Figure 2 is a vertical sectional view of the same.

Figure 3 is a sectional view taken on the line 3-v-3 of Figure 2.

Referring in detail to the drawings, the numeral 1 indicates a chimney cowl adapted to be secured to a chimney 2 in any well known manner and includes a lower or anchoring section 3,'l an upper section 4 to which an elbow-shaped hood 5 is secured. The lower section 3 fits within the flue of the chimney 2 and is secured to said chim ney in any desired manner and has depending downwardly over the same the section 4 and the latter is of a diameter greater than the diameter of the section 3. An annular member 6 is secured to the lower section 3 intermediate its ends and has formed on its periphery an annular track 7 to be engaged by grooved rollers 8 that are journaled to an annular member 9 soldered or otherwise rigidly secured to the lower end of'the upper section 4. Annular member or ring `9,is an angle iron and has its horizontal iange 9 spaced from the section 3 as seen in Figures 2 and 3.

An annular member-or ring 10 is secured within the lower lsection 3 and has formed integrally with the same a bar or web 11 provided with a socket 12 adapted to receive a ball or sphere 13 formed upon a pivot rod 14. The ball or sphere is retained within the socket 12 by means of a removable plate 15 that is provided with an opening to permit the pivot rod 14 to extend through the same. The upper end of the pivot rod 14 is enlarged and secured to a bar'16 formed integrali with a ring or annular member 17 and t eflatter is secured within the upper end of the'iupper section 4 so that said section is held against lateral movement in relation to the lower section 3, but will have free rotation in relation to the lower section. The rollers 8 traveling upon the track 7 also will prevent the upper section from wabbling in relation t0 the lower section. The upper section 4 projects above the lower section 3 and has Secured to its upper end the discharge or elbow-shaped element 5, the exhaust end 17 of which is positioned or disposed laterally of the sections 3 and 4. The elbow-shaped section 5 is secured to the upper section 4 against rotation in relation thereto. A band 18 is secured to the section 4 and has secured thereto a vane 19 for positioning the exhaust end 17 of the discharge or elbow-shaped element 5 in an opposite direction from the direction in which the wind is blowing.A The vane 19 will always maintain the device in such a position that the wind will be prevented from blowing into the exhaust end 17 of the cowl, thus preventing downward pressure. within the flue of the chimney.

, v 1 While I have shawn and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described my invention what I claim is: l'

A cowl having an anchoring section, a hood section into which said anchoring section extends and relatively to which it moves axially, an elbow section on the hood section, a ring within the hood section, a rod depending from said ring substantially centrall choriyng section, said rod having an enlarged lower end, means in the anchoring section to journal said enlarged end, a removable plate on said rod disposed over said enlarged end to secure said rod to the anchoring section, a track wall surrounding the anchoring section and spaced therefrom, an angle iron of the hood section and into the an-z rigid with and at the base of the hood Section, one of the walls of said angle iron being disposed vertically, peripherally grooved rollers within the angle iron journaled on said last mentioned wall to engage said track at their grooves and the other wall of the `angle iron extending inwardly and having an opening of greater cross sectional area than the anchoring section whereby it will be maintained spaced therefrom by the engagement ofthe rollers with the track.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM T. MGCULLOUGH.

Witnesses:

J. C. TURNER, Doss MONDY. 

